define(['../libs/jquery/jquery.min.js'],()=>{
    class xiDing{
        constructor(){
            this.init()
        }
        init(){
            this.xd()
        }
        xd(){
            $(window).scroll(function () { 
                if($(window).scrollTop()>=146){
                    $('.ul3').addClass('fixed')
                }else{
                    $('.ul3').removeClass('fixed')
                }
            });
        }
    }
    return {
        xiDing : new xiDing()
    }
})
